.netcore3.1 mvc 根据路径下载

根据路径下载

 public IActionResult DownloadFile()
        {
            //string filePath = AppDomain.CurrentDomain.BaseDirectory.Replace("\\", "/") + model.Path;//"Excel/123.zip";//以字符流的形式下载文件 
            string filePath = Directory.GetCurrentDirectory().Replace("\\", "/") + "/wwwroot/modeulFile/模板下载.xls";

            var addrUrl = filePath;
            var stream = System.IO.File.OpenRead(addrUrl);
            string fileExt = ".xls";//GetFileExt(file);
            //获取文件的ContentType
            var provider = new FileExtensionContentTypeProvider();
            var memi = provider.Mappings[fileExt];
            return File(stream, memi, Path.GetFileName("模板下载.xls"));
        }